Sash-fastener



(No Model.)

G. GIBSON.

- SASH PASTENER. No. 473,390.

Patented Apr. 19, 1892 firrzey.

UNITED STATES.

PATENT QFFICE.

GEROLT GIBSON, OF ST. LOUIS, MISSOURI.

SASH-FASTEN ER.

SPECIFICATION forming part of Letters Patent No. 473,390, dated April19, 1892.

Application filed August 22, 1891- Serial No, 403,455. (No model.) I

To all whom, it may concern:

Be it known that I,.GEROLT GIBSON, a citizen of the United States,residing at St. Louis, in the State of Missouri, have invented certainnew and useful Improvements in Window-Sash Locks; and I do declare thefollowing tobe a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention has for its object, first, to prevent the rattling ofwindow-sashes, and, second, to lock the upper sash, so as to prevent itsbeinglowered, thelockin g of the two sashes to prevent rattling beingautomatic upon the parts of the device coming together in' closing thewindow, while the locking of the upper sash, so as to prevent its beinglowered, is not automatic, and this device is intended for use inconnection with a suitable lock for locking the lower sash wheuclosed.

In carrying out my invention I proceed as follows, reference being hadto the accompanying drawings, forming a part hereof, and in whichFigures 1 and 2 are views in elevation of my window-sash look as appliedin position. Figs. 3, 4, and 5 are views in detached detail ofthe'several parts composing my lock.

My window-sash lock is composed, essentially, of three parts of novelconfiguration, the part L being attached to the top of the meeting-railof the lower sash, the part D embedded flush with the face of the siderail of the upper sash near the meeting-rail, and the part Aefixed tothe vertical bead that separates the two sashes. The part Lhas a hookend WV, that when the parts of the lock are in iheir locked positionengages a lug B of the part A.

B is a lug formed on the member A and similar in contour to the lug B,and these lugs B and B have curved edges N and G, respectively, and areseparated by a slot 0, for a purpose as will presently appear.

The member D is a rectangular frame, with in which is arranged to slidea bolt H, having a finger depression land laterally-projecting lug K,and at one corner a lug E, with curved uppersurface F.

The curved surfaces N and G of the lugsB and B of the part A of the lockare adapted to fit, respectively, the curved surface F of the lug E ofthe member D and beneath the hook end W of part L, and the slot 0 ofpart A is to receive the lug K of the bolt II.

To look the sashes of the window to prevent theirrattling, supposing thetwo sashes to be slightly separated, as in Fig. 1, upon raising theupper sash the lugE is brought in engagement with the lug B of theimmovable member A of the lock, and by reason of the curved engagingsurfaces of said lugs the top sash is drawn toward the lower sash. Nowupon lowering the lower sash the hook end IV of the member L engages thelug B and the said lower sash is similarly drawn toward the uppersash.Thus the two meeting-rails of the window are brought together, and bothof said sashes being locked to an immovable part of the window-framerattling of said sashes is prevented. To lock the top sash, so as toprevent its being lowered, the bolt H is shot so that the lug K willenter the slot 0 of the member A, as in Fig. 2. The upper sash cannot,therefore, be lowered until the said bolt is Withdrawn.

Having thus described my, invention, I claim as new and desire to secureby Letters Patent of the United States- The window-sash lock described,composed of the member L, with hook end WV, secured to the top ofthemeeting-rail of thelower sash, the member A, with lugs B and B andslot 0, secured to the vertical dividing-bead of the window-frame, andthe member D, with lug E F and sliding bolt H K, all constructed andarranged to operate substantially as and for the purposes specified.

In testimony whereof I affix my signature in the presence of twowitnesses.

. GEROLT GIBSON.

In presence of LUTHER H. CONN, VICTOR R. GIBSON.

